openhuman/docs/tinyagents-full-migration-plan/05-events/01-journals.md

05.1 — Durable journals + status stores

Steps

1. In assemble_turn_harness, attach a StoreEventJournal (over the 04-sessions JsonlAppendStore) via a JournalSink on the run's EventSink, plus a HarnessStatusStore writer (start with the in-memory impl process-wide; durable Store-backed status is the target — write a small Store-backed HarnessStatusStore impl if the crate has none).
2. Same for graphs: JournalGraphSink + GraphStatusStore on delegation/ workflow/teams/fanout runs.
3. Wrap UI-bound sinks with RedactingSink; define the redaction policy (prompts, tool args/results, secrets) in one OpenHuman module.
4. Late-attach replay: an RPC (agent.run_events?) that reads read_from(run_id, offset) + status so the desktop can reconnect mid-run and backfill — replaces reliance on transient AgentProgress buffering.
5. Feed session_db/run_ledger event/telemetry rows FROM journal records (projection job or write-through sink) instead of parallel publishes.

Deletions

None directly; enables 05.2/05.3 deletions.

Acceptance

• Kill the UI mid-turn, reattach, reconstruct the full timeline from journal + status (e2e).
• list_by_root answers "every active descendant of this root run".